通过

XmlAttributeCollection.ItemOf[] 属性

  • 参考

定义

命名空间:
System.Xml
程序集:
System.Xml.dll, System.Xml.XmlDocument.dll
程序集:
System.Xml.ReaderWriter.dll
程序集:
System.Xml.XmlDocument.dll
程序集:
System.Xml.dll
程序集:
netstandard.dll

获取具有指定名称或索引的特性。

重载

ItemOf[Int32]

获取具有指定索引的特性。
ItemOf[String]

获取具有指定名称的特性。
ItemOf[String, String]

获取具有指定的本地名称和命名空间唯一资源标识符 (URI) 的特性。

ItemOf[Int32]

获取具有指定索引的特性。

public:
 property System::Xml::XmlAttribute ^ default[int] { System::Xml::XmlAttribute ^ get(int i); };
public:
 virtual property System::Xml::XmlAttribute ^ default[int] { System::Xml::XmlAttribute ^ get(int i); };
public System.Xml.XmlAttribute this[int i] { get; }
public virtual System.Xml.XmlAttribute this[int i] { get; }
member this.ItemOf(int) : System.Xml.XmlAttribute
Default Public ReadOnly Property ItemOf(i As Integer) As XmlAttribute
Default Public Overridable ReadOnly Property ItemOf(i As Integer) As XmlAttribute

参数

i
Int32

属性的索引。

属性值

XmlAttribute

指定索引处的属性。

例外

IndexOutOfRangeException

正在传递的索引超出范围。

示例

以下示例显示集合中的所有属性。

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   
   //Create an attribute collection. 
   XmlAttributeCollection^ attrColl = doc->DocumentElement->Attributes;
   Console::WriteLine( "Display all the attributes in the collection...\r\n" );
   for ( int i = 0; i < attrColl->Count; i++ )
   {
      Console::Write( "{0} = ", attrColl[ i ]->Name );
      Console::Write( "{0}", attrColl[ i ]->Value );
      Console::WriteLine();

   }
}

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main(){

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    //Create an attribute collection.
    XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;

    Console.WriteLine("Display all the attributes in the collection...\r\n");
    for (int i=0; i < attrColl.Count; i++)
    {
      Console.Write("{0} = ", attrColl[i].Name);
      Console.Write("{0}", attrColl[i].Value);
      Console.WriteLine();
    }
  }
}

Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()
  
    Dim doc as XmlDocument = new XmlDocument()
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" & _
                "<title>Pride And Prejudice</title>" & _
                "</book>")      

    'Create an attribute collection.
    Dim attrColl as XmlAttributeCollection = doc.DocumentElement.Attributes

    Console.WriteLine("Display all the attributes in the collection...")
    Dim i as integer
    for i=0  to attrColl.Count-1
      Console.Write("{0} = ", attrColl.ItemOf(i).Name)
      Console.Write("{0}", attrColl.ItemOf(i).Value)
      Console.WriteLine()
    next
        
  end sub
end class

注解

此属性是文档对象模型 (DOM) 的 Microsoft 扩展。 它等效于调用 XmlNamedNodeMap.Item。

另请参阅

适用于

ItemOf[String]

获取具有指定名称的特性。

public:
 property System::Xml::XmlAttribute ^ default[System::String ^] { System::Xml::XmlAttribute ^ get(System::String ^ name); };
public:
 virtual property System::Xml::XmlAttribute ^ default[System::String ^] { System::Xml::XmlAttribute ^ get(System::String ^ name); };
public System.Xml.XmlAttribute this[string name] { get; }
public System.Xml.XmlAttribute? this[string name] { get; }
public virtual System.Xml.XmlAttribute this[string name] { get; }
member this.ItemOf(string) : System.Xml.XmlAttribute
Default Public ReadOnly Property ItemOf(name As String) As XmlAttribute
Default Public Overridable ReadOnly Property ItemOf(name As String) As XmlAttribute

参数

name
String

属性的限定名称。

属性值

XmlAttribute

具有指定名称的属性。 如果此特性不存在，则此属性返回 null。

示例

以下示例从文档中删除一个属性。

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;

int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   
   //Create an attribute collection and remove an attribute
   //from the collection.
   XmlAttributeCollection^ attrColl = doc->DocumentElement->Attributes;
   attrColl->Remove( attrColl[ "genre" ] );
   Console::WriteLine( "Display the modified XML...\r\n" );
   Console::WriteLine( doc->OuterXml );
}

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main(){

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    //Create an attribute collection and remove an attribute
    //from the collection.
    XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;
    attrColl.Remove(attrColl["genre"]);

    Console.WriteLine("Display the modified XML...\r\n");
    Console.WriteLine(doc.OuterXml);
  }
}

Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()
  
    Dim doc as XmlDocument = new XmlDocument()
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" & _
                "<title>Pride And Prejudice</title>" & _
                "</book>")      

    'Create an attribute collection and remove an attribute
    'from the collection.  
    Dim attrColl as XmlAttributeCollection = doc.DocumentElement.Attributes
    attrColl.Remove(attrColl.ItemOf("genre"))

    Console.WriteLine("Display the modified XML...")
    Console.WriteLine(doc.OuterXml)

  end sub
end class

注解

此属性是文档对象模型 (DOM) 的 Microsoft 扩展。 它等效于调用 GetNamedItem。

适用于

ItemOf[String, String]

获取具有指定的本地名称和命名空间唯一资源标识符 (URI) 的特性。

public:
 property System::Xml::XmlAttribute ^ default[System::String ^, System::String ^] { System::Xml::XmlAttribute ^ get(System::String ^ localName, System::String ^ namespaceURI); };
public:
 virtual property System::Xml::XmlAttribute ^ default[System::String ^, System::String ^] { System::Xml::XmlAttribute ^ get(System::String ^ localName, System::String ^ namespaceURI); };
public System.Xml.XmlAttribute this[string localName, string namespaceURI] { get; }
public System.Xml.XmlAttribute? this[string localName, string? namespaceURI] { get; }
public virtual System.Xml.XmlAttribute this[string localName, string namespaceURI] { get; }
member this.ItemOf(string * string) : System.Xml.XmlAttribute
Default Public ReadOnly Property ItemOf(localName As String, namespaceURI As String) As XmlAttribute
Default Public Overridable ReadOnly Property ItemOf(localName As String, namespaceURI As String) As XmlAttribute

参数

localName
String

属性的本地名称。

namespaceURI
String

属性的命名空间 URI。

属性值

XmlAttribute

具有指定本地名称和命名空间 URI 的属性。 如果此特性不存在，则此属性返回 null。

注解

此属性是文档对象模型 (DOM) 的 Microsoft 扩展。 它等效于调用 GetNamedItem。

适用于